Carbonating machine



FIG. 1 is a front perspective view of a carbonating machine, showing our new design;

FIG. 2 is a right side elevation view thereof;

FIG. 3 is a left side elevation view thereof;

FIG. 4 is a front elevation view thereof;

FIG. 5 is a rear elevation view thereof;

FIG. 6 is an enlarged bottom view thereof; and,

FIG. 7 is an enlarged top view thereof. 

CLAIM The ornamental design for a carbonating machine, as shown and described. 